From: Reinder Verlinde <reinder@...>
Date: 2005-11-18T09:07:18+09:00
Subject: Re: Time.yesterday ? :)

In article <ufypux4u2.fsf@atlmicampbell.checkfree.com>,
 Michael Campbell <michael.campbell@gmail.com> wrote:

> Marcin Jurczuk <mj-usunto@tkb.pl> writes:
> 
> > Hello group.
> > 
> > Is there any simple method to get Time object like Time.now but with
> > yesterday date, without worrying about end of month or begining new one ?
> 
> Pedantic to be sure, but keep in mind all the variations on the
> "... - 86400" scheme universally fail during the Daylight Savings
> Time cutovers that some of us are unfortunate to have to suffer.
> 
> Probably this won't affect you.

Even more pedantic: even if it does not, the assumption that every day 
has 86400 seconds is still incorrect. A day with a leap second has 86401 
or 86399 (has not happened yet) seconds.

Reinder